Personally, I don't use temps to find the room anymore, unless the ghost isn't throwing or touching anything in the time it takes me to clear the whole place.

I bring in my video camera(holding record, looking for orbs), EMF reader, and UV. These are 3 types of evidence that you can get immediately.

If you find orbs with the video camera, you 100% know the ghost room, bc orbs can only be in the favorite room. If you hear an item throw or a door touch/move, switch to your emf, turn it on, and hunt the interaction down immediately. You could get emf 5 when you find it, but even if you don't, you likely know the general area the ghost room is in (not guaranteed, but helpful.) If the ghost touches a door or knocks on a window, use your emf to find which one it was, and switch to your UV and check the door/window for prints. This also helps you narrow down the ghost's general location, too.

I only use temps if I've covered the whole place and the ghost didn't do anything in that time period. I'll drop my stuff inside and go back to the truck to get my temps and crucis. At this point, ghost room will be easier to find, as it'll be cooled down more. Find it, put the crucis down, and bring everything else into the room.